Cartons



D. LEVKOFF I Nov. 24, 1959 CARTONS 3 Sheets-Sheet 2 Filed Feb. 14, 1957FIGS.

' P; @zw

United States Patent CARTONS David Levkolf, Great Neck, N.Y., assignorof one-fourth to Evelyn S. Levkotf, one-fourth to Henry S. Lcvkolf, andone-fourth to Edith L. Sennet, all of Great Neck. N.Y.

Application February 14, 1957, Serial No. 640,119

Claims. (Cl. 229-16) This invention relates to cartons, and particularlyto those of tray-like form, such as are widely used at the present timefor containing baked goods, candies, fruits, vegetables and numerousother products.

It is an object of the invention to provide a carton of this type whichcan be constructed from a single sheet of cardboard; which can bedistributed to the consumer in a flattened condition and easily erectedfor filling, and which will have its walls, and particularly the endwalls, strongly reinforced and arranged in interlocked relation ship tothereby provide stiffness and rigidity especially at the ends of thecarton.

It is another object of the invention to provide a carton adapted forenclosure in transparent wrapping, and which shall be provided withmeans tending to maintain parts of the wrapping arranged taut across theopen top of the carton thereby holding the wrapping from contact withthe packaged commodity.

It is a further object of the invention to provide a carton in whichinterlock of portions of overlying end walls result in a stiffenedstructure and one secured without adhesive securement together of saidends walls, the stiffness of the walls and the arrangement of shouldersor ledges on some of them permitting stacking of these cartons.

It is an object of the invention to provide a carton which can beeconomically fabricated; which can be shipped in flattened form thusoccupying little space, and which can be speedily erected in readinessfor the reception of its intended contents.

With these, and otherobjects to be hereinafter set forth in view, I havedevised the arrangement of parts to be described and more particularlypointed out in the claims appended hereto.

In the accompanying drawings, wherein an illustrative embodiment of theinvention is disclosed,

Fig. 1 is a top plan view of a carton constructed in accordance with theinvention;

Fig. 2 is a fragmentary view of a portion of the carton, showing how thewalls are upwardly folded to assume their erect positions;

Fig. 3 is an enlarged sectional view, taken substantially on the line 33of Fig. 1, looking in the direction of the arrows, and showing thelocking flaps on the outer end walls disengaged from behind the lockingflaps on the inner end walls;

Fig. 4 is a sectional view, taken substantially on the line 44 of Fig.1, looking in the direction of the arrows, and showing the flaps on theend walls and those on the side walls in upstanding position, theposition of the latter flaps being disposed upwardly as the normallyhorizontal position which these flaps assume in the operative conditionof the carton;

Fig. 5 is a front elevational view of the carton;

Fig. 6 is a face view of the blank from which the improved carton isproduced;

. Fig. 7 is a view of the blank in its folded and glued 2,914,233Patented Nov. 24, 1959 condition and in the flattened form in which itis distributed to the consumer;

Fig. 8 is a transverse sectional view through the carton, similar tothat of Fig. 5, but with the outer wall locking flap in its engagedposition;

Fig. 9 is an enlarged sectional view taken substantially on the line9--9 of Fig. 8, looking in the direction of the arrows;

Fig. 10 is a face view of a blank for another embodiment of theinvention, and

Fig. 11 is a sectional view in perspective of a carton made from saidblank.

Referring to the drawings, and more particularly to Fig. 1 thereof,wherein is shown a blank from which the improved carton is formed. Theblank is preferably, but not necessarily, composed of a single sheet ofcardboard, formed substantially in the shape shown. The bottom wall orpanel of the carton is shown at 1, one edge of the same being defined bythe score lines 3. At each end of the panel of which the bottom 1 formsa part, are parallel score lines indicated at 3, 4 and 5. The portion 6of the blank that is located between the score lines 3 and 4 constitutesone of the outer end walls of the carton. The portion 7 located betweenthe score lines 4 and 5 forms a ledge or shoulder at the top of each endwall 6, and the flap indicated at 8, and provided with the central tab9, forms an outer end wall lockingflap. Both ends of the blank beyondthe fold or score lines 3 are similar. That is to say, each of theseends has the outer end wall 6, ledge 7 and outer end wall locking flap8, provided with tab 9. Centrally located in the bottom 1 adjacent tothe two transverse score lines 3, are slits 10.

The side walls of the carton are respectively shown at 11 and 12, andeach of these walls is formed with a longitudinal score line 13 fromwhich extends a flap 14 directed inwardly in the erected carton. Theportion of the blank in which the side walls 11 and 12 are formed islongitudinally scored as indicated at 15, and beyond the score line 15is provided an attaching flap 16, which is extended inwardly to overliethe upper face of the bottom 1 adjacent to one edge thereof and isadhesively attached to the bottom in the manner seen in Fig. 5.

The inner end Walls for the carton are indicated at 17, the upper edgeof each of said inner end walls being defined by the score line 18beyond which is located the inner end wall locking-flap 19, providedwith a central tongue 20 adapted to befitted into one of the slits 10.The ends of the side walls 11 and 12 are connected to the inner endwalls 19 by means of foldable webs 21, said webs being foldable on thescore lines 22 and 23. Formed adjacent to the score lines 18 are theslits 24 which result in the production of the tongues 25.

The blank is shown in its glued and flattened condition in Fig. 7 and inthe form in which the same is shipped to the consumer. It will betherein noted that the blank of Fig. 6 has been folded on thelongitudinal score lines 2 and 15 and the attaching flap 16 has beenadhesively attached to the upper face of the bottom 1 adjacent to oneedge thereof. To erect the carton, or bring it into goods-receivingposition, the blank, now as shown in Fig. 7, is folded on the transversescore lines 3, and as the end walls and side walls all assume an erectposition, the webs 21 will fold on their score lines 22 and 23, as shownin Fig. 2. The inner end wall locking flaps 19 are extended downwardlyover the webs 21 and the tongues 20 on these flaps 19 are inserted inthe slits 10,

which slits are located at the junctions of the outer end manner toenable the tabs 9 to be inserted through the slits 24 to thus positionthese tabs behind the inner end wall locking flaps 19 in the mannershown in Figs. 8 and 9. This interlocking arrangement in which the innerend wall flaps 19 are engaged with the slits and the outer end wallflaps 8 have their tabs 9 engaged behind flaps 19, provides anexceptionally rigid end wall structure for the carton, and one attainedwithout the use of adhesives in the end wall areas. Moreover, theformation of a ledge or shoulder 7 at the top of the carton at each endalso adds substantial rigidity to the ends of the carton. This rigidityis of considerable importance since it enables the filled cartons to bestacked one upon the other without causing collapse of the walls of thecarton.

In addition, there is a marked tendency to the portion of the cartonwhich forms the ledges or shoulders 7 to rise upwardly and outwardly tosome slight extent and this tends to slightly stretch and elevate thetransparent wrapping above the packaged commodity. This is importantwhen such commodities consist of baked goods provided with icing, sincethe wrapping is held from contact with the icing.

In the embodiment of the invention shown in Figs. 10 and 11, the blankshown in Fig. 10 has a central rectangular area 30 constituting thebottom of the carton formed as shown in Fig. 11. The blank is folded onthe longitudinal, parallel score lines indicated respectively at 31 and32 to provide upstanding opposite side walls indicated at 46 and 47. Theside wall designated at 47 is formed with a longitudinal score line 48on which it is folded to provide the inturned top flap 49. Similarly,the opposite side wall of the blank is folded on the score line 52 toprovide the opposite inturned top flap 53.

The blank is also provided with two transverse score lines both shown at33, and beyond each of these score lines is an outer end wall 54. Thisouter end wall 54 is transversely folded on the parallel score linesindicated respectively at 39 and 41, a strip-like area 40 providedbetween these score lines forming a horizontal ledge along the top ofthe carton at the end wall. Extending beyond the score line 41 is anouter locking flap 42 provided with a centrally located tab 43,

The inner end wall at each end of the carton is composed of a pair ofoverlapped and adhesively united flaps indicated generally at 35- and350. Each of the flaps 35 is formed with a score line 36 and a slit 51,and beyond the score line 36 is. provided the inner locking flap 37adapted, when. the same is downturned on the score line 36, to enterinto a slit 34 provided at the junction of the-bottom 30 and end wall54. The flap 35- is also provided with the foldable web 44 adapted to befolded on the angular fold line- 45. The arrangement above described ispresent in all of the four flaps 35 and 35a, the outer locking flaps onthe flaps 35a being indicated at 370.

As will be clear from Fig. 10', both ends of the blank and carton formedtherefrom are alike, so that a description of one end will suflice. Themanner in which this embodiment of the carton is set up will be seen inFig. 11. It will be therein noted that the overlapping portions of theseveral flaps 35 and: 35a are adhesively united by the glue areasprovided at 38' on the flaps 35, the carton having been folded. on thescore lines 31 and 32 to. attain the overlap. of the flaps. 35' and 35a.When the blank, folded and glued as. above described, has its end wallsraised to erect position byfolding on the lines 33, the. overlapped andadhesively united inner locking flaps can then bev downfolded on thescore lines 36 to enable tongues 50 formed on these flaps to be insertedin the slits: 34. When the blank is folded on the score lines 39 and 41the tabs 43- on the outer locking flaps 42 can be entered into the slits51 as shown in Fig. 11, and the erection of the carton will then becomplete, the same appearing as shown in Fig. 11.

Having described several embodiments of the invention,

it is obvious that the same is not to be restricted thereto, but isbroad enough to cover all structures coming within the scope of theannexed claims.

What I claim is:

1. A carton having a bottom, side walls and inner end walls, the innerend walls being provided at the top with downturned locking flaps havingtongues, the bottom being provided with slits receiving the tongues onsaid downturned locking flaps, outer end walls provided at their topwith a ledge, said outer end walls each having a ilap, there being slitsat the junction of the inner end walls with the locking flaps and endportions of said outer end wall flaps being inserted through the slitsat said junctions.

2. A carton having a bottom, side walls and inner end walls, the innerend walls being provided with downturned locking flaps having their endsinserted in slits in the bottom, said inner end walls having slitslocated at the junction of said inner end walls with the locking flaps,outer end walls provided at the top with locking flaps which aredownturned to extend over the flaps on the inner end walls, the lockingflaps on the outer end walls being provided with tabs entrant into theslits at the junction of the inner end walls with the flaps thereon.

3. A carton having a bottom, side walls, and inner end walls, said innerend walls being provided with downturned locking flaps having tongues,the bottom having slits at its junctions with the end walls, the tongueson the locking flaps being entrant into said slits, outer end wallsdisposed on the outside of the inner end walls, said outer end wallsbeing each provided with downturned locking flaps, the locking flaps onsaid outer end walls each having a tab at its free end, said inner endwalls each havinga slit adjacent to its junction with its locking flap,and the tabs on the outer end wall locking flaps entrant into thelast-mentioned slits.

4. A carton providedwith a bottom, side walls provided at the top withinturned flaps, outer end walls and inner end walls, each inner end wallhaving a downturned flap provided at its free endwith a tongue, thebottom havingslits into which said tongues are entered to maintain theinner end walls in downturned position, the outer end walls beingprovided at their tops with ledges, flaps extending downwardly fromsaidledges, said flaps having tabs, the inner end walls having slits at thejunction of their upper ends with the flaps thereon into which said tabsare entered to thereby dispose said tabs between the locking flaps ontheinner end walls and saidinner endwalls.

5. A carton provided with a bottom, side walls and inner and outer endwalls, the inner end walls having downturned locking flaps and meansengaging the same to hold such flaps in downturned position, the outerend walls being each provided at the top with a downturned locking flap,said flap having atabbedend, the inner end walls each having an apertureat; the junction of its upper endwith the locking flap thereon throughwhich the tab on the outer end wall locking flap is entered to therebydispose it between the inner end wall locking flap and the inner endwallon which said locking flap is formed.

References Cited in the-file of this patent UNITED STATES PATENTS1,730,8l6 Grigg' Oct. 8-, 1929 2,401,944- Levkoff June H, 1946 2,414,703Snyder Jan; 21, 1947 2,532,808 Grinnell Dec. 5, 1950 2,643,813 VinesJune 3.0, 1953 2,730,293 Levkoif Jan. 10, 1956 2,750,100 Griesman June12,.1956

FOREIGN PATENTS 482,947 ,Canada May'6, 1952 W p ar

